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magic missile, fireball scrolls

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Llywelwyn 2023-07-09 09:12:21 +01:00
parent 2266998e80
commit 06c3d40c65
7 changed files with 315 additions and 50 deletions
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24
src/particle_system.rs
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@ -4,6 +4,11 @@ use specs::prelude::*;
pub const DEFAULT_PARTICLE_LIFETIME: f32 = 150.0;
/// Runs each tick, deleting particles who are past their expiry.
// Should make an addition to this to also spawn delayed particles,
// running through a list and removing the frame_time_ms from the
// delay. When delay is <= 0, make a particle_builder.request for
// the particle.
pub fn cull_dead_particles(ecs: &mut World, ctx: &Rltk) {
let mut dead_particles: Vec<Entity> = Vec::new();
{
@ -41,9 +46,28 @@ impl ParticleBuilder {
ParticleBuilder { requests: Vec::new() }
}
/// Makes a single particle request.
pub fn request(&mut self, x: i32, y: i32, fg: RGB, bg: RGB, glyph: rltk::FontCharType, lifetime: f32) {
self.requests.push(ParticleRequest { x, y, fg, bg, glyph, lifetime });
}
// Makes a particle request in the shape of an 'x'. Sort of.
pub fn request_star(&mut self, x: i32, y: i32, fg: RGB, bg: RGB, glyph: rltk::FontCharType, lifetime: f32) {
self.request(x, y, fg, bg, glyph, lifetime * 2.0);
self.request(x + 1, y + 1, fg, bg, rltk::to_cp437('/'), lifetime);
self.request(x + 1, y - 1, fg, bg, rltk::to_cp437('\\'), lifetime);
self.request(x - 1, y + 1, fg, bg, rltk::to_cp437('\\'), lifetime);
self.request(x - 1, y - 1, fg, bg, rltk::to_cp437('/'), lifetime);
}
/// Makes a particle request in the shape of a +.
pub fn request_plus(&mut self, x: i32, y: i32, fg: RGB, bg: RGB, glyph: rltk::FontCharType, lifetime: f32) {
self.request(x, y, fg, bg, glyph, lifetime * 2.0);
self.request(x + 1, y, fg, bg, rltk::to_cp437('─'), lifetime);
self.request(x - 1, y, fg, bg, rltk::to_cp437('─'), lifetime);
self.request(x, y + 1, fg, bg, rltk::to_cp437('│'), lifetime);
self.request(x, y - 1, fg, bg, rltk::to_cp437('│'), lifetime);
}
}
pub struct ParticleSpawnSystem {}